问题
选择题
The panic buying of salt reminds us that it is necessary to keep _____ in an emergency. [ ]
A. quiet
B. calm
C. silent
D. still
答案
答案：B
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The panic buying of salt reminds us that it is necessary to keep _____ in an emergency. [ ]
A. quiet
B. calm
C. silent
D. still
答案：B